that the respondent was impotent at the time of the marriage and at the time of the institution of the suit;

that the parties are within the prohibited degrees of consanguinity (whether natural or legal) or affinity;

that either party was a lunatic or idiot at the time of the marriage;

that the former husband or wife of either party was living at the time of the marriage, and the marriage with such former husband or wife was then in force. Nothing in this section shall affect the jurisdiction of the High Court to make decrees of nullity of marriage on the ground that the consent of either party was obtained by force or fraud.

Every decree of nullity of marriage made by a District Judge shall be subject to confirmation by the High Court, and the provisions of section seventeen, clauses one, two, three and four, shall, mutatis mutandis apply to such decrees.

Where a marriage is annulled on the ground that a former husband or wife was living, and it is adjudged that the subsequent marriage was contracted in good faith and with the full belief of the parties that the former husband or wife was dead, or when a marriage is annulled on the ground of insanity, children begotten before the decree is made shall be specified in the decree, and shall be entitled to succeed, in the same manner as legitimate children, to the estate of the parent who at the time of the marriage was competent to contract.